Lowrance lcx-112c 操作ガイド

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Section 4:  
Sonar Options & Other Features 
Material in this section is arranged in alphabetical order. 
ASP
 (Advanced Signal Processing) 
The ASP
™ feature is a noise rejection system built into the sonar unit 
that constantly evaluates the effects of boat speed, water conditions 
and interference. This automatic feature gives you the best display 
possible under most conditions. 
The ASP feature is an effective tool in combating noise. In sonar terms, 
noise is any undesired signal. It is caused by electrical and mechanical 
sources such as bilge pumps, engine ignition systems and wiring, air 
bubbles passing over the face of the transducer, even vibration from the 
engine. In all cases, noise can produce unwanted marks on the display. 
The ASP feature has four settings — Off, Low, Medium and High. If 
you have high noise levels, try using the "High" ASP setting. However, 
if you are having trouble with noise, we suggest that you take steps to 
find the interference source and fix it, rather than continually using the 
unit with the high ASP setting. 
There are times when you may want to turn the ASP feature off. This 
allows you to view all incoming echoes before the ASP feature processes 
those echoes. 
 
 
Sonar Menu with Sonar Features selected (left). The Sonar Features 
menu (right), Noise Rejection selected with ASP at default low setting.  
To change the ASP level: 
1. From the Sonar Page, press 
MENU
|
 to 
S
ONAR 
F
EATURES
|
ENT
2. Press 
 then 
 
to 
N
OISE 
R
EJECTION
|
ENT.
 
3. Press 
↓ or ↑ to select a setting, then press 
ENT
4. To return to the previous page, press 
EXIT
|
EXIT.